Modes of Access

General Users (GUs)

Much of the research performed at the NSLS is conducted by general users who are scientists interested in using the NSLS for experimental programs under the General User Program.

All facility beamlines at the NSLS reserve at least 50% of their available beam time for general users and PRT beamlines reserve at least 25% of their available beam time for general users.

Requests for beam time at the NSLS are made by submitting a General User Proposal or Rapid Access Proposal (on applicable beamlines) through a web-based system. General user proposals are peer reviewed for scientific merit and rated by the Proposal Review Panels (PRPs). Allocations of beam time are made by the NSLS Beam Time Allocation Committee.

Proposals are generally active for a two-year period; Rapid Access proposals are active for a one-year period.

Users' Reference Guide